1. Through which one among the following materials does sound \travel slowest?
a) air
b) glass
c) water
d) wood
2. The spread in colors in a rainbow on sky is primarily due to.
a) Dispersion of sunlight
b) Reflection of sunlight
c) Refraction of sunlight
d) Total internal reflection of sunlight
3. Which one of the following is a good conductor of electricity?
A) shellac
B) Human body
C) Glass
D) Ebonite
4. On which one of the following conservation laws, does a rocket worked?
a) Mass
b) Energy
c) Linear momentum
d) Angular momentum
5. Match the following lists
List 1 list II
A. Cellulose nitrate 1. Soft soap
B. Potassium sulphate 2. Gun powder
C. Potassium salt of fatty acids 3. Fertilizer
D. Calcium oxide 4. Glass
Codes
A B C D
(A) 2 3 1 4
(B) 2 1 3 4
(C) 4 1 3 2
(D) 4 3 2 1
6. LIGHT EMITTING DIODE (LED ) converts?
a) Light energy, into electrical energy
b) Electrical energy into light energy
c) Thermal energy into light energy
d) Mechanical energy into electrical energy.
7. The Celsius temperature is a/an
a) Relative temperature absolute temperature
b) Specific temperature
c) Approximate temperature
8. Which one of the following common devices works on the basis of the principle of mutual inductions?
A) Tube light
B) transformers
C) Photo-diode
D) LED
9. The phenomenon of ‘total international reflection’ is observed in which one of the following?
a) Glowing tube light
b) Light passing through lens
c) Sparking diamond
d) Twinkling star
10. Match the following lists
List I List II
a. Voltmeter 1. Measurement of potential difference
b. Ammeter 2. Measurement of electric current
c. Galvanometer 3. Measurement of emf
d. Potentiometer 4. Detection of electric current
A B C D
(A) 1 2 3 4
(B) 1 2 4 3
(C) 4 3 1 2
(D) 3 4 1 2
ANSWERS
1.d
2.b
3.b.
4.c.
5.c
6.b
7.c
8.b
9.c
10.a